I was pushing and lift a pile or tree top left overs.
With these smaller machines, you have to be very careful running over ANY debris because with the low ground clearance so many bad things can (and do ) happen. Low ground clearance, lots of operational critical components not to mention filter housings, oil pans, pedals, hydraulic lines and hoses and of course spinning drive shafts don't mix well with items wedged into them.
When I am pushing something with the buckets or fork, the moment something get under the bucket or forks or past them, I stop, back up, realign the push point and start over. Better safe than sorry..........
The service manager is full of something and its not Thanksgiving Turkey (yet) because exactly what is the broken pedal "protecting" by acting as a shear pin? And the broken point isn't the weakest part, its the part where the leverage of the wedged stick, limb, branch, tree top, space shuttle part or conestoga wagon wheel was wedged into the pedals and basic leverage snapped it..........And it sure helped strand the machine, which could really be a problem in many situations. So I would discount the "pedal snapping at the weakest point" story and SM theory as "something to say when they don't know the correct answer"..........
I haven't tried it on the 1 series, but on many of the older machines, you could LIFT the reverse pedal and it would actually move the tractor FORWARD. That was based upon how the base of the pedals pivoted in the mounting bracket. Its worth a try on these machines to see if at least, you can move the machine that way. Tie a small rope or something around the top of the reverse pedal and see if you can "LIFT" it towards you and if the machine moves forward. Worth a shot...........